Gill-drawing frame



' R..c. BERKER GILL-'DRAW-ING FRAME Filed Oct. Vl5, 1940 4 2f 02 i, w f/ M5 2 IN1/mgm d! 6 636/ A TTORNEYS.

Patented July 14, 1942 UNITED STATES-p^- PATENT OFFICE azsasvo GRAL-DRAWING FRAME Ralph C. Berker, HoXie, R. I.

Application October l15, 1940, Serial No. 361,298

This invention relates to gill-drawing frames 1 Cilaim.

withrespect to the lower half of the head housing the lower set of screws.

Another object. of the invention is to provide in a gill drawing frame means for holding the gill screws in the top half of the intersecting head in an open position away from the lower set of screws for ready access to the mechanism without requiring the use of the well known abutment ears on the hinge members and the chain supported weight as commonly used at the present time for counterweighting the movable top half.

Another object of the invention is to provide a prop device which may be constructed in the form of an attachment adapted to be applied to gill drawing frames of usual design and construction without material alteration or reconstruction thereof. l

With these and other objects in View, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claim.

In the accompanying drawing:

Fig. 1 is a side elevational view 0f the hingeopening head member housing the upper and lower sets of gill screws and faller bars of the gill drawing frame construction shown in Patent No. 1,876,936 to which is applied my invention;

Fig. 2 is a similar View illustrating the upper half section of the head member swung open with the upper and lower pairs of gill screws in a separated relationshp;

Fig. 3 is a fragmentary front elevational view, partly in section showing the gill screws and the faller .bars mechanism at one side of the machine with the faller bars of one set in operative relation to those of the other set;

Fig. 4 is a fragmentary front elevational view of the gill head member showing applied thereto a modified form of bracket mounting carrying the swingable prop member; and

Fig. 5 is a fragmentary front elevational view of the gill head member showing applied thereto another modied mounting support member carrying the swingable prop element.

One prior construction of gill drawing frame in common use at the present time is that shown and described in Patent No. 1,876,936 to Holdsworth, dated September 13, 1932, having a hingeopening head housing the upper and lower sets of gill screws and faller bars. In this prior form of construction, the cooperating hinge parts have been provided with upper and lower laterally projecting anges or lugs which are disposed with their end faces in position to strike each other to form a stop for limiting the maximum extent of opening movement of the upper half of the hinged head when it is swung open. It has been found, however, that in the use oi' this prior structure the hinge itself sometimes snaps off, while in many instances the laterally projecting flanges or lugs often break off if they are subjected to a sudden and violent impact against each other as would occur when the top half of the head is lifted too quickly and allowed to drop back by the pulling action of a heavy weight which is usually suspended from one end of a chain such as a bicycle chain, which passes over a pulley and carries a washer on its other end by which the chain is detachably secured to some projecting part on the movable upper half of the hinged head member, such as the head of a bolt; and in order to stop breakage of the hinge parts and to avoid the aforementioned difliculties, and also to eliminate the use of the prior weighted chain and the potential hazard created thereby of the chain becoming accidentally dislodged from its anchorage and the weight dropping on the foot of the operator, I have provided in accordance with the present invention a device which may be attached to a stationary part of the frame and so constructed and arranged as to have interlocking relation with a. part on the movable upper half of the hinged head member of the'gill bcx whenever the same is swung open toafford ready access to the interior thereof, and this device comprises a swingable prop having a slot which is so shaped as to enable sliding movement of the cooperating element on the upper half of the hinged head as the same is swung open and with the upper portion of the slot so shaped as to be self-locking under the weight of the wide-opened gill head to sustain it in its opened position; and the following is a more detailed description of the present emboidment of this invention, illustrating the preferred means by which these advantageous results may be accomplished:

With reference to the drawings, Il) generally designatesone of a pair of hinged journal blocks or bearing head members of similar construction and arrangement located at opposite sides of the gill drawing frame and housing the usual gill screw mechanism, the construction being substantially the same as described in Patent No.

1,876,936 to Holdsworth, dated September 13, 1932, and comprising the upper and lower halves or sections I2 and I3 respectively of the block I0. The upper pair of gill screws I5 and I Ii which traverse the set of faller bars I'I are journaled in the upper hinged section I2 while the lower pair of gill screws I8 and I3 for traversing the set cf faller bars 29 are journaled in the lower hinged section I3, all of which construction is usual in the art. Suitable lugs or ears 2| and 22 are provided having slots 2li and 25 for receiving the bolts which attach the usual faller guides (not shown) in proper relation to the gill screws. Bolts 25 passing through suitable holes in the frame and screwed into the side of the bottom section I3 of the block I Il serve to rigidly attach the same to the side of the machine.

The upper half section I2 of the journal block normally rests against the flat top face 36 of the lower half section I3, the joint being broken with a vertical shoulder as a t 3'! to form a ledge or offset portion which holds the two sections I2 and I3 in alignment when they are closed, as illustrated in Fig. l. The upper section may be arranged to move away from the lower section in any suitable manner and, preferably, a hinged joint 33 is provided' with its axis substantially coincident with the parting line between the two half members I2 and I3. The hinge 33 between the two sections I 2 and I3 may be constituted by the ears 35 and 3 projecting from' the rearward side of each section and formed with the hubs 31 respectively. through which extends a pivot pin or stud 39 suitably held in place by a washer on the lower ear 36, see Figs. i and 2, whereby to form a stop for limiting the opening movement of the upper half section I3 when it is swung open as illustrated in Fig. 2.

A square-headed bolt 4'3 passes down through a hole 4!! in the upper half section I2 of the journal block I0 and has its lower threaded end screwed into a tapped hole de" in the lower half section of the block I3 to hold the two halves of the block I@ in connected relationship.

In order to support the upper half section I2 of the gill head member I0 when it is swung wide open for ready accessibility to the gill screw mechanism and the fal'ler bars, I` have provided in accordance with this invention a device comprising a bracket member 45' which is suitably fastened, as by studs 46, to the lower half section I3 of the head I0, and pivotally mounted at the upper end portion of the bracket member 45 is a swingable arm 48 provided therein with a slot @9 extending longitudinally and substantially diagonally thereof. A pin 50 carried by and projecting from a side of the top half section I2 of the head is slidably received in the slot 59. Formed at the free end of the arm member 68 and communicating with the slot 49 is a lateral recess or crook 5I which is so shaped as to accommodate and receive the pin 58 when the same is slid the entire length of the slot 40 to the free end thereof and thence laterally into the recess 5I when the top half section I2 of the head is swung into an open position, the weight of the top half section I2 acting to hold the pin 5i) in engagement with the bottom of the recess 5I and the arm member 48 serving as a prop to support the upper section I2 at an oblique angle and in a separated relation with respect to the lower section I2. When in this separated position the arrangement of the arm 68 will be such that the lianges 49 and 4I will not be in abutting relation but instead will be held slightly separated, as shown in Fig. 2, whereby there will be no impingement of the anges during opening of the upper half section I2.

In Fig. 4 there is shown a modied arrangement in which the arm member 60 is of similar slotted construction to the swingable arm 8 but instead is suitably pivoted as by a bolt 6I to the top portion of a bracket 62 which is undercut as at 53 for mounting on the top edge trl of the side plate member 65 of the frame of the machine where it may be held in place by bolts 65.

Another modiiied arrangement is shown in Fig. 5, in which the pivoted slotted arm member l5 is suitably pivoted to the side face of a block 'II as by means of a bolt 12, and the block bolted by studs 'I3 directly to the top face of the side plate member 'i4 of the machine.

The foregoing description is directed solely towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible.

I claim:

In a gill drawing frame or like machine having upper and lower hinged sections providing a seperable head housing the gill screw mechanism including the intersecting comb members, of a device for holding up the upper section of said head in a separated relation from said lower section when said upper section is lifted and swung upwardly from said lower section, said device comprising an arm member of equal width throughout its length and pivoted at one end portion thereof to one of said hinged sections and having a slot extending generally diagonally of the arm terminating in proximity to the upper free end of said arm, and a pin on the other hinged section of said head accommodated within and in engagement with said slot, the free end of said arm being provided with a recess extending laterally of said arm and in communication with the upper end of said slot to provide a crook extension therein for receiving said pin at the completion of its sliding movement in the longitudinal direction of said slot to the upper end thereof to support said arm when acting as a prop to hold the upper hinged section of said head in a raised position from said lower hinged section, the arrangement being such that the pin will initially occupy a position at one side of the pivot axis of said arm when the sections are closed, and will be moved from this position and be located at a position at the other side of the pivot axis of said arm when the upper hinged section is held in a raised position by said arm.

RALPH C. BERKER. 

